How animals choose habitats during periods of inactivity, such as roosting or resting, is an often overlooked aspect of habitat preference that can differ significantly from how habitats are selected during active periods. Eastern Whip-poor-wills (Antrostomus vociferous) are migratory nocturnal aerial insectivores that breed throughout eastern North America. In Canada, Whip-poor-will populations have declined by over 30% in the past 20 years, and a comprehensive understanding of their diurnal and nocturnal habitat selection is required for developing effective conservation management strategies. From 447 radio-telemetry locations of 12 female and 32 male adult Whip-poor-wills radio-tracked over three breeding seasons (2018-2020), we used resource selection functions to assess habitat preference of Whip-poor-wills in the northern portion of their breeding range within Torrance Barrens Dark-Sky Preserve, central Ontario. Locations were taken both at night when individuals were primarily active and during the day when they were roosting. During both day and night, Whip-poor-wills used deciduous forest and shrubland more often than expected based on availability, while they avoided open water and wetlands. At night, Whip-poor-wills preferred to use mixed forest and rock barrens, while there was no difference between use and availability of these land cover types during the day. Our results suggest that shrubland and deciduous forest are important as both foraging and roosting habitat for Whip-poor-wills in this population, while rock barrens and mixed forest are important for foraging. While landscapes dominated by rock barrens interspersed with patches of shrubland and deciduous and mixed forests are uncommon, they could play an important role in the persistence of declining Whip-poor-will populations, particularly in the northern part of their breeding range. Conservation efforts for northern breeding Whip-poor-wills should focus on surveying and protecting similar rock barrens landscapes and those with a comparable patchwork of land cover features.

中文翻译：

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东部鞭毛穷人（Antrostomus vociferous）在其繁殖范围北部的昼夜和夜间栖息地偏好

动物在不活动期间（例如栖息或休息）如何选择栖息地，是栖息地偏好的一个经常被忽视的方面，这可能与活跃时期如何选择栖息地大不相同。Eastern Whip-poor-wills (Antrostomus vociferous) 是迁徙的夜间空中食虫动物，在整个北美东部繁殖。在加拿大，过去 20 年里，Whip-poor-will 种群数量下降了 30% 以上，需要全面了解它们的昼夜栖息地选择，才能制定有效的保护管理策略。从 12 只雌性和 32 只雄性成年 Whip-poor-wills 的 447 个无线电遥测位置通过无线电跟踪三个繁殖季节（2018-2020），我们使用资源选择函数来评估 Whip-poor-wills 在安大略中部托伦斯贫瘠之地黑暗天空保护区繁殖范围北部的栖息地偏好。地点是在夜间个体主要活跃的时候和白天栖息的时候拍摄的。在白天和晚上，Whip-poor-wills 使用落叶林和灌木地的频率高于基于可用性的预期，同时他们避免开放水域和湿地。到了晚上，Whip-poor-will 更喜欢使用混交林和岩石荒地，而这些土地覆盖类型在白天的使用和可用性之间没有区别。我们的研究结果表明，灌木丛和落叶林作为该种群中鞭毛穷人的觅食和栖息栖息地很重要，而岩石贫瘠和混交林对于觅食很重要。虽然以岩石荒地为主，散布着灌木丛和落叶林和混交林的景观并不常见，但它们可能在持续下降的 Whip-poor-will 种群中发挥重要作用，特别是在其繁殖范围的北部。北方繁殖鞭贫遗志的保护工作应侧重于调查和保护类似的岩石贫瘠景观以及具有可比拼凑的土地覆盖特征的景观。